#include <stdio.h>
#include <omp.h>
//编译指令
//gcc -std=c99 -fopenmp 1HelloWorld.c -o cmake-build/1HelloWorld && export OMP_NUM_THREADS=512 && time ./cmake-build/1HelloWorld
int main()
{
#pragma omp parallel default(none)
    {
        printf("hello world\n");
    }
    return 0;
}



